Keno Introduction
Keno is a lottery or bingo gambling game often played at modern casinos, and is also offered as a game in some state lotteries. A traditional live casino keno game uses a circular glass enclosure called a "bubble" containing 80 balls which determine the balldraw result. Each ball is imprinted with a number 1 through 80. During the balldraw, a blower pushes air into the bubble and mixes the balls. A "caller" presses a lever opening a tube, where the balls lift one at a time into a "V" shaped tube called the "rabbit ears". The caller and a "verifier" record each of 20 balls drawn, and the computerized keno system calculates all wagers based on the numbers drawn.
Players wager by marking an "X" over the "spot" choices on a blank keno ticket form with 80 numbered selection boxes. After all players successfully place their wagers, the casino draws 20 balls at random. Some casinos automatically call the balldraw at preset timed intervals regardless of whether or not players are waiting to place a wager.

Keno History
The word "keno" has French or Latin roots (Fr. quine five winning numbers, L. quini five each), but by all accounts the game originated in China. A spurious legend[citation needed] has it that the invention of the game saved an ancient city in time of war, and its widespread popularity helped raise funds to build the Great Wall of China. In modern China, the idea of using lotteries to fund a public institution has not become accepted in China before the late 19th century.[citation needed]

The Chinese lottery baige piao is not documented before 1847 when the Portuguese Government of Macao decided to grant a licence to lottery operators. (By the way the Portuguese then called this "white pigeon" lottery simple 'a lotaria Chinese'. According to some, results of keno games in great cities were sent to outlying villages and hamlets by carrier pigeon, resulting in its Chinese name baige piao or "white pigeon tickets", pronounced pack-kop-piu in Cantonese

Modern keno
The balldraw occurs at the "keno booth". The balldraw is typically determined by one of four devices:
Traditional “Rabbit Ear” blower 
Random Number Generator: An electronic number selection device approved by gaming authorities
“Hand Cage”: A spinning metal ball cage which rolls the numbers into a slot where they are validated by a person

Keno Rules
Playing online Keno is like picking your lottery numbers. The game is all about luck and an absolute Keno beginner will have the same chance of winning as an experienced player. However, that doesn't mean that it's pointless to learn the rules of Keno. If you familiarize yourself with the different bets and the other Keno rules you will find the game much more interesting and enjoyable.